Sharp LC-26SA1E, Руководство по обслуживанию

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LC-26SA1E/RU, LC-32SA1E/RU
6 – 19
<When EXT3 is used for external input> No picture on the display (5)
No EXT3-Y/C output of the external input system.
Checklist:
1) Is “INPUT SOURCE” button on the remote control set up correctly?
•••
See the operation manual and set “INPUT SOURCE” to “EXT3”.
2) Is MENU-PICTURE-CONTRAST/BRIGHTNESS set to “MIN”?
•••
Set it to an appropriate level.
3) Check the connection to the external device
•••
Connect it correctly as per the operation manual for the device.
Is Y/C signal sent to pins (11) and (7) of S-TERMINAL (J1201)?
NO Check external connection, input setting, S-TERMINAL (J1201)
and peripheral circuits.
YES
Is Y3 signal (IN3-Y) sent to Input terminal pin (6) of IC1201
(SW)? NO Check S-TERMINAL (J1201) and peripheral circuits.
YES
Is Y/C signal (VIN7/VIN8) sent to input terminal pins (184) and
(183) of IC3002 (VCT)? NO Check CONNECTOR (SC2703/P1102), IC3002 (VCT) and
peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent from pins (141) and
(140) - (129) and (128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent from pins (132) and (131)? NO Check pins (192), (170) and (133) of BU3.3V power line and pins
(185), (169) and (142) of BU1.8V power line of IC3002 (VCTP),
and peripheral circuits.
YES
Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (12) and (13) -
(24) and (25) of CONNECTOR CN1 in LCD-CONT-UNIT, and is
CLK signal (LVDS_CN/CP) sent to pins (21) and (22)? NO Check CONNECTOR (P2305, CN1) and HARNESS WIRE (LV).
YES
Is power (LCD5V) supplied to pins (2) - (5) of CONNECTOR CN1
in LCD-CONT-UNIT? NO Is LCD5V supplied to pin (31) - (28) of CONNECTOR (P2305)?
Check HARNESS WIRE (LV).
YES
Replace LCD-CONT-UNIT.